ABSTRACT
A model of information processing and memory must account for the memory structures and psychological processes intervening between stimu lus and response. Memory structures are storage components that hold information. Psychological processes are operations in the model that involve a transformation of information in one structure to information in another. The goal of a model is to define the nature of the information held in each structure, its life span, and the rules by which it is lost. Simi larly, the operations of the intervening processes must be described in detail. For example, can a given process allocate a limited processing capacity to one task at the expense of another? Structure and process are highly interdependent and the theorist must specify the structures utilized at each processing stage.
